Creepage distance test card

Creepage distance test card

First, the ??? Product description:

Creepage distance test cards are designed and manufactured according to GB / T 16935.1-2008/IEC 60664-1:2007 standard Mainly used for inspection and electrical products and electrical accessories such as creepage distances and clearances.

Glossary: ?

n ??????? Safe distance, including electrical gap (space distance), the penetration distance and insulation creepage distance (creepage distance).

n ??????? Clearances: two adjacent conductors or a conductor, the shortest distance measured along the air adjacent the surface of the motor shell.

n ??????? Creepage distance: the shortest distance between two adjacent conductors or a conductor and along the adjacent surface of the motor housing must insulating surface measurements.

n ??????? Primary circuit: A circuit is directly connected to the AC mains power supply circuit.

n ??????? Secondary circuit: secondary circuit and primary circuit directly connected, but located within the transformer, converter or equivalent isolation device, or a battery-powered circuit.

Second, the ???? Technical parameters


8 ? Size	1.0, 1.5, 2.0, 2.5, 3.0, 4.0, 6.0, 8.0.
27 dimensions	1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.5, 2.8, 3.0, 3.2, 3.3, 4.0, 4.5, 5.0, 5.5, 6.0, 6.3, 6.4, 7.0, 8.0, 9.0, 10.
According to the standard	GB / T 16935.1-2008/IEC 60664-1:2007
Extension to the standard	IEC 60065-2005 ?? GB8898 ???? IEC60598.1- ? GB7000.1 The IEC 60335.1-2006 ? GB4706.1 ?? IEC60601.1-2005 ? ? GB9706.1
Dimensional accuracy	? ± 0.03mm
Scope of application

Third, the ???? Use

Electrical clearance measurement steps:

u ????? Determine the operating voltage peak and RMS;

u ????? Determine the device's supply voltage and power supply facilities category ? ; ?

u ????? According to the type of over-voltage to determine the transient overvoltage size of the equipment; ??

u ????? Determine the level of contamination of equipment (general equipment for pollution degree 2); ??

u ????? Determine the electrical gap across the insulation type (functional insulation, basic insulation, supplementary insulation and reinforced insulation).

Determine creepage distance steps: ?

u ????? Determine the RMS or DC value of the operating voltage;

u ????? To determine the material group (compared to the tracking index, divided as follows: in group Ⅰ materials, group II materials, III group a material, ? III b groups of materials. )

u ????? Determine the level of contamination;

Determine the insulation type (functional insulation, basic insulation, supplementary insulation and reinforced insulation)